Form
SCHEDULE 13D/A
Active or control-oriented beneficial ownership filing.
Samsara BioCapital, L.P. - 13 Nov 2025 SCHEDULE 13D/A Report for ALUMIS INC. Common Stock, par value $0.0001 per share (ALMS)
- Filing manager
- Samsara BioCapital, L.P.
- Reporting owner
- Srinivas Akkaraju
- Beneficially owned shares
- 4,767,910 shares
- Large-stake signal
-
Ownership
4.9%Beneficial ownership of this reported class.
Shares
4,767,910 sharesShares beneficially owned as disclosed.
Event date
13 Nov 2025Date tied to the ownership event or amendment.
Accepted by SEC
17 Nov 2025EDGAR acceptance date.
How to read this large-stake filing
- Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
- Compare this filing with the holder history and issuer page before treating the percentage as a current position.
- Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
- Class ownership
- 4.9%
- Symbol
- ALMS
- Shares outstanding
- 97,304,286 shares
- SEC form
- SCHEDULE 13D/A
- Accepted by SEC
- 17 Nov 2025, 16:56:24 UTC
- Event date
- 13 Nov 2025
- Prior SEC filing
- 23 May 2025
- Next SEC filing
- 24 Nov 2025
- Source filing
- View source filing
Ownership signal
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Subject security
Names, identifiers, and filing context for this profile.
2 source fields
Source evidence
Original filing metadata and source links for verification.
6 source fields
Key filing fact
Samsara BioCapital, L.P. disclosed 4.9% ownership in ALUMIS INC. Common Stock, par value $0.0001 per share (ALMS) on 13 Nov 2025.
Key facts
- Samsara BioCapital, L.P. filed SCHEDULE 13D/A for ALUMIS INC. Common Stock, par value $0.0001 per share (ALMS).
- Disclosed ownership: 4.9%.
- Date of event: 13 Nov 2025.
Change
- Previous schedule filing date: 23 May 2025.
- Current filing was accepted on 17 Nov 2025, 16:56.
Research use
- This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
- Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.
Evidence
Backed by Schedule 13D/13G
View source filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Disclosed reporting parties (5)
Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.
| Name | Ownership | Shares owned | Sole voting power | Shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Samsara BioCapital, L.P. | 4.6% | 4,491,731 | 0 | 4,491,731 | /s/ Srinivas Akkaraju | By Samsara BioCapital GP, LLC, its General Partner, By Srinivas Akkaraju, Managing Member | 0001699737 |
| Samsara BioCapital GP, LLC | 4.6% | 4,491,731 | 0 | 4,491,731 | /s/ Srinivas Akkaraju | By Srinivas Akkaraju, Managing Member | 0001888829 |
| Samsara Opportunity Fund, L.P. | 0.3% | 276,179 | 0 | 276,179 | /s/ Srinivas Akkaraju | By Samsara Opportunity Fund GP, LLC, its General Partner, By Srinivas Akkaraju, Managing Member | 0002086193 |
| Samsara Opportunity Fund GP, LLC | 0.3% | 276,179 | 0 | 276,179 | /s/ Srinivas Akkaraju | By Srinivas Akkaraju, Managing Member | 0002086456 |
| Srinivas Akkaraju | 4.9% | 4,767,910 | 0 | 4,767,910 | /s/ Srinivas Akkaraju | Srinivas Akkaraju | 0001253170 |
CIK / CUSIP context first